<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="../vue.js"></script>
</head>

<body>
  <div id="app">
    <h2>{{fullName}}</h2>
  </div>
  <script>
    const app = new Vue({
      el: "#app",
      data: {
        firstName: "kobe",
        lastName: "bulaen"
      },
      // 计算属性 computed
      computed: {
        fullName: function () {
          return this.firstName + " " + this.lastName;
        }
      }
    })
  </script>
</body>

</html>